... but for some of us maybe not as much fun! :)?
The hardest repair I did on the FT-980 was tracking down a broken wire inside of T04 on the AF board. I was able to remove it, repair the hairthin wire, and reassemble it somehow. Since it was an intermittent connection, I spent weeks prodding around before I discovered that pressure on part of the AF board would flex the transformer and cause it to open: once open it was easy to track down to T04. Ugh ... maybe not so much fun after all ...
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-Mat Breton, N8TW